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Outline

• interface IERC165
•    - function supportsInterface(bytes4 int ...
•  contract IERC721 is IERC165
•    - function balanceOf(address owner)
•    - function ownerOf(uint256 tokenId)
•    - function safeTransferFrom(address fro ...
•    - function transferFrom(address from, a ...
•    - function approve(address to, uint256 ...
•    - function getApproved(uint256 tokenId)
•    - function setApprovalForAll(address op ...
•    - function isApprovedForAll(address own ...
•    - function safeTransferFrom(address fro ...
•  contract ICards is IERC721
•    - function batches(uint index)
•    - function userIDToAddress(uint48 id)
•    - function getDetails(
•    - function setQuality(
•    - function mintCards(
•    - function mintCard(
•    - function burn(uint tokenId)
•    - function batchSize()
•  contract MigrationMigration *
•    - function migrate()

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/**
 *Submitted for verification at Etherscan.io on 2019-11-01
*/

pragma solidity 0.5.11;


/**
 * @dev Interface of the ERC165 standard, as defined in the
 * [EIP](https://eips.ethereum.org/EIPS/eip-165).
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others (`ERC165Checker`).
 *
 * For an implementation, see `ERC165`.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}


/**
 * @dev Required interface of an ERC721 compliant contract.
 */
contract IERC721 is IERC165 {
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of NFTs in `owner`'s account.
     */
    function balanceOf(address owner) public view returns (uint256 balance);

    /**
     * @dev Returns the owner of the NFT specified by `tokenId`.
     */
    function ownerOf(uint256 tokenId) public view returns (address owner);

    /**
     * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to
     * another (`to`).
     *
     * 
     *
     * Requirements:
     * - `from`, `to` cannot be zero.
     * - `tokenId` must be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this
     * NFT by either `approve` or `setApproveForAll`.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) public;
    /**
     * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to
     * another (`to`).
     *
     * Requirements:
     * - If the caller is not `from`, it must be approved to move this NFT by
     * either `approve` or `setApproveForAll`.
     */
    function transferFrom(address from, address to, uint256 tokenId) public;
    function approve(address to, uint256 tokenId) public;
    function getApproved(uint256 tokenId) public view returns (address operator);

    function setApprovalForAll(address operator, bool _approved) public;
    function isApprovedForAll(address owner, address operator) public view returns (bool);


    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public;
}


contract ICards is IERC721 {

    struct Batch {
        uint48 userID;
        uint16 size;
    }

    function batches(uint index) public view returns (uint48 userID, uint16 size);

    function userIDToAddress(uint48 id) public view returns (address);

    function getDetails(
        uint tokenId
    )
        public
        view
        returns (
        uint16 proto,
        uint8 quality
    );

    function setQuality(
        uint tokenId,
        uint8 quality
    ) public;

    function mintCards(
        address to,
        uint16[] memory _protos,
        uint8[] memory _qualities
    )
        public
        returns (uint);

    function mintCard(
        address to,
        uint16 _proto,
        uint8 _quality
    )
        public
        returns (uint);

    function burn(uint tokenId) public;

    function batchSize()
        public
        view
        returns (uint);
}

contract MigrationMigration {

    uint public batchIndex;
    ICards public oldCards;
    ICards public newCards;
    uint public constant batchSize = 1251;

    constructor(ICards _oldCards, ICards _newCards) public {
        oldCards = _oldCards;
        newCards = _newCards;

    }

    event Migrated(uint batchIndex, uint startID);

    function migrate() public {

        (uint48 userID, uint16 size) = oldCards.batches(batchIndex * batchSize);
        require(size > 0, "must be cards in this batch");
        uint16[] memory protos = new uint16[](size);
        uint8[] memory qualities = new uint8[](size);
        uint startID = batchIndex * batchSize;
        for (uint i = 0; i < size; i++) {
            (protos[i], qualities[i]) = oldCards.getDetails(startID + i);
        }
        address user = oldCards.userIDToAddress(userID);
        newCards.mintCards(user, protos, qualities);
        emit Migrated(batchIndex, startID);
        batchIndex++;
    }

}

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000000000000000000000000564cb55c655f727b61d9baf258b547ca04e9e548000000000000000000000000629cdec6acc980ebeebea9e5003bcd44db9fc5ce

-----Decoded View---------------
Arg [0] : _oldCards (address): 0x564cb55c655F727b61D9baF258b547Ca04E9e548
Arg [1] : _newCards (address): 0x629cDEc6aCc980ebeeBeA9E5003bcD44DB9fc5cE

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000564cb55c655f727b61d9baf258b547ca04e9e548
Arg [1] : 000000000000000000000000629cdec6acc980ebeebea9e5003bcd44db9fc5ce

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bzzr://673d3dcdea5665c98f06573ab5dbbf07bb3fd9a5a313a2d862eacb63b612c62b